A platform for research: civil engineering, architecture and urbanism
A platform for research: civil engineering, architecture and urbanism
Concrete antifreezing agent and preparation method thereof
The invention provides a concrete antifreezing agent and a preparation method thereof, and the preparation method specifically comprises the following steps: adding n-dodecanethiol, potassium persulfate, isopropanol and deionized water into a reaction container, stirring and heating to 85-90 DEG C, and dropwise adding acrylic acid; after dropwise adding, continuously reacting for 4-5 hours to obtain a polyacrylic acid solution; cooling the reactant to 55-60 DEG C, adding sodium tungstate into the reaction container, dropwise adding sodium methallyl sulfonate, and continuously reacting for 3-4 hours after dropwise adding; and then adding triethanolamine to continuously react for 1-2 hours to obtain the modified polyacrylate antifreezing agent. The technology is suitable for construction in alpine regions, construction in winter, temporary first-aid repair, emergency rescue and relief work and the like, the construction period can be prolonged, the project quality is ensured in the low-temperature environment of-20 DEG C to-25 DEG C, the working efficiency is improved, the project progress is accelerated, and the technology has positive practical significance.
本发明提供了一种混凝土防冻剂及其制备方法，具体制备为：往反应容器中加入正十二硫醇、过硫酸钾、异丙醇和去离子水，搅拌并升温至85～90℃，滴加丙烯酸；滴加完毕后继续反应4～5h，得到聚丙烯酸溶液；将反应物降温至55～60℃，往反应容器中加入钨酸钠，滴加甲基丙烯磺酸钠，滴加完毕后继续反应3～4h；再加入三乙醇胺继续反应1～2h，得到改性聚丙烯酸酯防冻剂。该技术适用于高寒地区施工、冬季施工以及临时抢修、抢险救灾等情况，能够延长施工期、在‑20～‑25℃低温环境下保证工程质量，提高工作效率、加快工程进度，具有积极的现实意义。
Concrete antifreezing agent and preparation method thereof
The invention provides a concrete antifreezing agent and a preparation method thereof, and the preparation method specifically comprises the following steps: adding n-dodecanethiol, potassium persulfate, isopropanol and deionized water into a reaction container, stirring and heating to 85-90 DEG C, and dropwise adding acrylic acid; after dropwise adding, continuously reacting for 4-5 hours to obtain a polyacrylic acid solution; cooling the reactant to 55-60 DEG C, adding sodium tungstate into the reaction container, dropwise adding sodium methallyl sulfonate, and continuously reacting for 3-4 hours after dropwise adding; and then adding triethanolamine to continuously react for 1-2 hours to obtain the modified polyacrylate antifreezing agent. The technology is suitable for construction in alpine regions, construction in winter, temporary first-aid repair, emergency rescue and relief work and the like, the construction period can be prolonged, the project quality is ensured in the low-temperature environment of-20 DEG C to-25 DEG C, the working efficiency is improved, the project progress is accelerated, and the technology has positive practical significance.
本发明提供了一种混凝土防冻剂及其制备方法，具体制备为：往反应容器中加入正十二硫醇、过硫酸钾、异丙醇和去离子水，搅拌并升温至85～90℃，滴加丙烯酸；滴加完毕后继续反应4～5h，得到聚丙烯酸溶液；将反应物降温至55～60℃，往反应容器中加入钨酸钠，滴加甲基丙烯磺酸钠，滴加完毕后继续反应3～4h；再加入三乙醇胺继续反应1～2h，得到改性聚丙烯酸酯防冻剂。该技术适用于高寒地区施工、冬季施工以及临时抢修、抢险救灾等情况，能够延长施工期、在‑20～‑25℃低温环境下保证工程质量，提高工作效率、加快工程进度，具有积极的现实意义。
Concrete antifreezing agent and preparation method thereof
一种混凝土防冻剂及其制备方法
HUANG YONGMAO (author)
2024-08-09
Patent
Electronic Resource
Chinese
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